Tet square



(No Model.)

`MP. WARD.

TRY SQUARE.

'Patented Nov. 2

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I UNIT-ED STATES l. PATENT Ormea. y

MATTHEW P. WARD, OF MOUNT OAItMEL, PA., ASSIGNOR OF APART TO DAVID O.HAAS ANDWALTON H. MONTELIUS, BOTH SAME PLAGE.

TRY-SQUARE.

SPECIFICATION formingpart of Letters Patent No. 351,820, dated November2, 1886.

Application filed May 12, 1886. Serial No. 201,974. (No model.)

To @ZZ whom/ may concern:

Be it known that I, MATTHi-lyr P. WARD, a

' citizen of the United States, residing at Mount A so that its Carmel,in the county of Northumberland and State of Pennsylvania, have inventeda new and useful Improvement in Try-Squares, of which the following is aspecification. K

My invention relates to improvements in trysquares 5 and it consists ofthe peculiar construction and arrangement of parts, substantially ashereinafter fully described, and particularly pointed out in the claims.

The object of my present invention is to provide a try-square which isespecially adapted for use by engineers in tightening up'the packing inpiston-rods, slide-valve rods, Snc., and which can be used uponvcylindrical or plane surfaces With equal facility, and which shall alsobe simple and strong in construction and easy of ready manipulation andoperation.

In the accompanying drawings, Figure l is a perspective view ofrnyinvention. Fig. 2 is a side elevation thereof, and Fig. 3 is versesectional View through the stock on the line .fr fr of Fig. 2..

Referring to the drawings, in which like letters of reference 'denotecorresponding partsin all the gures, A designates the blade of myimproved try-square, which is made of steel or any other suitable metaland material, and provided with a scale of any suitable character, andsubdivided Vinto spaces of any desired length on one or both of itsfaces; and B designates the stock which is secured to the blade. The endof the blade where it is connected to the stock is provided with atongue, a, that provides a shoulder, c', between the ends 0f the bladeand the stock, and when the blade is secured in the stock the tongue athereof is fitted in a mortise, b, at the upper end of the stock, outeredge lies iiush with the end of the stock, and the shoulder a of theblade projects beyond the end of -the stock, for a purposepresentlydescribed.

The upper ortry face, c, of the stock is arranged at right angles to theinner edge of the blade, and in this face is formed a recess, d, inwhich is tted a level-bulb, d', of any preferred construction, this bulbbeing retained in place a trans-V 'the way ofthe stock, it is turned bymeans of a plate, d2, or any other suitable means. The device is thusadapted for use as a spirit-level, to determine the horizontality of anobject or piece of Work by placing itagainst the same, or to ascertainthe perpendi'cularity of the work by placing the blade A against theWork.

The stock B is made of any desired or preferred material, and the lowerface thereof, opposite to the try or upper face, c, is provided with alongitudinal groove, D, the sides of which are arranged at rightlanglesto each other, and the' outer edges 0f the sides are beveled orinclined atan angle to the right-angled sides, as at e, so that thestock can be fitted or adjusted upon a cylindrical as well as a straightor plane surface. are also provided with the right-angled grooves E andF, and the edges of the sides thereof are also beveled or inclined, asat g, similar to the .edges of the groovesD. v

As hereinbefore mentioned, thetrysquare is especially adapted for use byengineers and others in squaring up a cylindrical object, and I will nowproceed. to describe the ina-nner of using the devicein a steam-engine.

The side faces of the stock 7 In tightening up the packings in moving joints-such, for instance, as in piston-rods or slide-valve rods-thelower-face of the stock is adjusted so that its edges bear against theperiphery of the rods, and allowing the outer edge of the blade to touchor come in contact with the gland, and it can at once be seen orascertained whether the gland is true with the .rod at the top, and byplacing the stock so thatthe edges thereof come in contact with one ofthe sides of the rod it can likewise be ascertained Whether the gland istrue with the sides of the rod. Vhen the bolts or burrs are in oradjusted to bring its lower groove, D, out of the Way, and bring theside grooves into play or position for use, and the horizontality of therod 'or rods can also be determined by the use of the spirit-bulb. Someof the glands of a steamengine are bunched7 out from various causes, andthis leaves an enlargement around the oritice of the gland, which Wouldprevent' the blade of the square from fitting up against the gland; butby means of the projecting shoulder a at the end of the blade thisdifficulty is avoided, as will be readily'seen.

It will thus be seen from the foregoing description that Iprovide atry-square which can be adjusted for use very easily and readily uponcylindrical or circular pieces of machinery and other devices as well asstraight or plane surfaces, and that it can also be used to ascertainthe horizontality or perpcndicularity of objects, &c.

I am aware that it is not new to provide a try-square with a metallicstock having longitudinal grooves; but in all such cases known to Inethe grooves are curved, but not rightangledin cross section, and areformed therein for the purpose' of lightness iu the construction ofthehandle.

By means of the beveled edges to the sides of the right-angled groovesthe device adapts or adjusts itself upon either' cylindrical or straightsurfaces, and by the shoulder a', at the end of the blade, the squarecan be adjusted in small places where it is difficult or impossible touse the blade itself.

I attach especial importance to the rightangled grooves formedlongitudinally of the stock, and having the sides arranged at rightangles to each other and provided with the beveled outer edges, and tothe shoulder a at the end of the blade and stock, as therein lies thegist of iny invention.

Having thus fully described my invention, what I claim as new, anddesire to secure by Letters Patent, is

1. A try-square comprising a blade, and a stock arranged and connectedto the blade at right angles thereto, and provided with a longitudinalgroove having its sides arranged at right angles to each other,substantially as de- 4o scribed, for the purpose set forth.

2. As a new article of manufacture, a trysquare comprising a blade and aright-angled stock, the blade being secured to one enel of the stock soas to provide a projecting snoulder that lies at right angles to the endof the stock, substantially as described, for the purpose set forth.

3. As a new article of manufacture, a trysquare comprising a blade, astock secured thereto at right angles and having a longitudinal groovethe sides of which are arranged at right angles to each other andbeveled or inclined outwardly at their free edges, substantially asdescribed.

4. As a new article of manufacture, a trysqnare comprising a bladehaving a tongue, a, and a shoulder, a', and a stock having the straighttry-face and a inortised end, in which the tongue of the blade issecured so as to lie flush with the end thereof, the said stock beingfurther'4 provided with longitudinal grooves having their sides arrangedat right angles to each other and their outer edges inclined or flaredoutwardly, substantially as described.

In testimony that I claim the foregoing as my own Ihave hereto affixedmy signature in pres ence of two witnesses.

li MATTHEW P. WARD.

mark.

Vitnesses:

J. WILSON, ANNIE THOMAS.

